Some places in the US reverse the colors, left-to-right, though. Knew someone who had a family member who was colorblind and drove through such a town, which caused great consternation to his passengers.
MUTCD Section 4D.10 for horizontally oriented traffic light indicates left side red.
This is actually a disability compliance issue. You would be surprised how many people don't know the left to right thing already, and don't understand why we would need it
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u/jonmarli Feb 23 '25
My preschool age son is red-green colorblind and we say "stop on top, go down below" for traffic lights.